I have a huge interest in lomography which is all about replicating those 70's snapshots we all love and remember. They are so much more interesting than the ordinary snaps you take with your camera. I use Hipstamatic and Instagram on my iphone 4 and they are amazing! Both are available at the app store. But i've also discovered a new site dedicated to this art form called www.lomograpghy.com Go and have a look!